There are 30 boys and 40 girls in a class. If the average age of boys – McqOptions

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1.	There are 30 boys and 40 girls in a class. If the average age of boys is 10 yr and average ageof girls is 8 yr. then the average age of the whole class is:
A.	8 yr
B.	8.86 yr
C.	8.2 yr
D.	9 yr
Answer» C. 8.2 yr

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